Fossils from fluvial deposits of early Oligocene age in Egypt document the earliest known diverse avifauna from Africa, comprising at least 13 families and 18 species. Included are the oldest fossil ...

Two new genera and species of spikefishes from the Menilitic Formation (late Tethys Sea) of the Upper Oligocene of Poland represent the first fossils of the two subfamilies of the tetraodontiform ...

Oxygen isotopes data enable researchers to look far back into the geologic past and reconstruct the climate of the past. In doing so, they consider several factors such as ocean temperature and ice ...